A monumental achievement, as Jamie solders the final core of the last-remaining 8-core cable to its rightful tag - see the video (plus outtake!) on YouTube at: https://www.youtube.com/channel/UC2H_ki95faCqOPWOt1OMkww 
To prove it's not all soldering, cleaning, etc., Tom Lane diligently programmes each TC64 unit (communication unit between each circuit board & the simulator)
Meanwhile, Peter continues the seemingly-unending task of soldering the 8-core cables to the tag blocks...yet the final tag block is coming into view!
Paul adds in new power jumper cables between the circuit boards, having crimped the ends
Peter gets to grips with tidying the various power distribution cables...
...whilst Jack continues wiring in PCBs that have had their cables soldered to the tag blocks & tested
Testing continues at the front of the panel, with many illuminated lamps in evidence...
...and swiftly moves further eastwards, with suitably-enscribed magnet to chart progress!
Jamie turns his hand to fault-finding, including crimping & reconnecting power jumper leads
Contrary to popular belief, yes, we're still making PCBs! Reinforcements of components arrive...
...and are quickly put to good use, with several more input & output boards assembled, cleaned & tested 
With more PCBs made, a quick view shows that we're 50% of the way to filling the final two racks
More tag block soldering is called for; Jamie does the honours while Tom helps test around the front
Meanwhile, Peter continues to terminate the cables at the PCB end, in readiness for more testing
Testing reaches Uffington loop...worthy of such a cake-based celebration! The look westwards shows just how far we've come
More parts arrive, allowing the telephone concentrator keyboards to have complete button sets again - can you spot the new ones?